When i close an unsaved file in fusion the save dialog pops up. Let's say i accidentally hit the close button and don't really want to close so i would hit cancel in the save dialog but this leads Fusion360 to close without saving. I think this is no good User experience. The reason is probably i once hit "always save on close" in the confirmation dialog that normally appears when closing. I think it should not be possible to suppress this dialog. This dialog should be responsible for the action that happens and should tell that clearly: save, close without saving, cancel (don't close).